Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-23-210829-index-headers.html | 2023-08-11 16:43:03 | |
| 0001193125-23-210829-index.html | 2023-08-11 16:43:03 | |
| 0001193125-23-210829.txt | 2023-08-11 16:43:03 | |
 0001193125-23-210829-xbrl.zip | 11225 | 2023-08-11 16:43:03 |
| d515533d8k.htm | 24855 | 2023-08-11 16:43:03 |
| d515533d8k_htm.xml | 3268 | 2023-08-11 16:43:03 |
| d515533dex51.htm | 12379 | 2023-08-11 16:43:03 |
| FilingSummary.xml | 1947 | 2023-08-11 16:43:03 |
| Financial_Report.xlsx | 5693 | 2023-08-11 16:43:03 |
 g515533dsp2a.jpg | 34459 | 2023-08-11 16:43:03 |
| MetaLinks.json | 18456 | 2023-08-11 16:43:03 |
| nfg-20230811.xsd | 2872 | 2023-08-11 16:43:03 |
| nfg-20230811_lab.xml | 17236 | 2023-08-11 16:43:03 |
| nfg-20230811_pre.xml | 10828 | 2023-08-11 16:43:03 |
| R1.htm | 38096 | 2023-08-11 16:43:03 |
| report.css | 2767 | 2023-08-11 16:43:03 |
| Show.js | 1085 | 2023-08-11 16:43:03 |